Open too many different non-versioned layouts for pair #10131
Description
As reported originally at: cms-sw/cmssw#37113, TClass/TStreamerInfo can complain that they are too many StreamerInfo for an std::class.
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As reported originally at: cms-sw/cmssw#37113, TClass/TStreamerInfo can complain that they are too many StreamerInfo for an std::class.